REST API: move the `is_post_type_allowed()` function to be available for all endpoints as it will need to be reused in several `post` endpoints

All tests continue to pass with this change
See https://[private link]

Merges r96544-wpcom.
REST API / Tests

* stop vip endpoints from failing in production (in_testing only allows them to work on sandboxes. plus there are already access checks and marks for making the endpoints undocumented)
* FP bug: vip post was bumped to FP but couldn't display because it was using a CPT
* fix email one of the tests checks for since the author email is different

Merges r96545-wpcom.
REST API: introduce the ability to modify the post's author when creating or editing a post. The new param accepts the author ID or

Also introduces tests for the new paramater
see https://[private link]

Merges r96553-wpcom.
Jetpack: Nerf bad .svn folder remnants.
Merge pull request #497 from Automattic/remove-svn

Jetpack: Nerf bad .svn folder remnants.
Tiled Gallery: Fix square layout remainder margin.

Remainder would be short in width from the regular rows by exactly the margin. This is now fixed by not substracting the margin from the remainder size.
Tiled Gallery: Bottom margin fix.

The root cause of why the bottom/top margin between rows in Tiled Galleries is twice as wide as between columns turned out to be specific to the mosaic layout, where the rows actually had a concrete 2px bottom margin. If we remove this margin, we have a clean equal margin everywhere.
Merge pull request #495 from Automattic/jkudish-rest-changes

Changes from @jkudish and @justinshreve on the REST API.
Add jetpack_log_entry action.

This will let other plugins like Stream easily log what we’re logging
as well.
Bunch of minor JP admin css tweaks

- Fixed left aligned image bug in modals at mobile resolution.
- Decreased excess padding/margin around clouds at mobile resolution.
- Show activate/deactivate links in mobile view, works on hover in
desktop
- Fixed margin-top on filter button in mobile view
- Fixed white horizontal line when left nav menu is collapsed
- Changed message on homepage to no longer mention, “Once you’ve
connected Jetpack…” if you’re already connected.
Merge pull request #502 from Automattic/ui-tweaks-dave

Bunch of minor JP admin css tweaks
AtD: Language wasn't being set, use interface language to decide with AtD language to use.
See: http://[private link]#comment-4617

Merges r96568-wpcom.
Fix HTML entity in AtD menu title

Merges r96521-wpcom.
Merge commit '36d6610'

Conflicts:
	modules/after-the-deadline/atd.core.js
REST API
Edit Posts

We shouldn't default to 'post' if no type is passed. In editing, if something is omitted it means we want it to stay the same.
(bug introduced in [96553]). This was breaking things like the DMCA tool.

Also adds a test to make sure the type stays the same (so the bug can't regress).

Merges r96732-wpcom.
REST API

Support setting and getting the per post flags for likes, sharing buttons, and G+
See http://[private link]

Merges r96757-wpcom.
REST API

Add the ability to set the sticky status of a post.
http://[private link]

props @codebykat

Merges r96759-wpcom.
Google+ Authorship

Add an option to still enable G+ but hide from display (still adds link attribute to header, etc).

See https://[private link] requested by matt.

Merges r96140-wpcom.
Merge commit '1a4196f'

Conflicts:
	modules/gplus-authorship/admin/ui.php
REST API: add new query paramater for filtering the fields returned

This query paramater allows you to specify which fields to return with endpoint responses by passing an additional comma-separated list of fields as part of the query.

For endpoints that contain one of the following objects: categories, comments, connections, domains, groups, likes, media, notes, posts, services, sites, suggestions, tags, themes, topics, users -- it will filter the contents of that object rather than the "parent" object. Otherwise, it filters the main returned object.

Comes with tests to make sure the filtering works correctly. Also removes an extra debug that was left in one of the tests.

see https://[private link] for project details

Merges r96761-wpcom.